we do in North American English: http://www.oxfordlearnersdictionaries.com/definition/american_english/pants
To make it a bit more confusing: "Bukse" (same with "brille") is one of those words that's often used in plural - even though it refers to a single pair of pants (or glasses). "Så fine bukser du har!" (You've got a nice pair of pants!) "Er det de nye buksene dine?"(That's your new pants?) "De brillene passer til deg." (Those glasses fit you very well.)
This plural form is often used in every day speech, and you'd have to rely on context to know if "buksene" or "brillene" is referring to one or several. These sentences can of course be changed to singular, avoiding the confusion;) "Så fin buske du har!" "Er det den nye buksen din?" "Den brillen passer til deg."
'buksene' refers to multiple pair of trousers. You could say "Buksen are ikke min" if you were talking about a single pair of pants. It's common to refer to it as such.
'briller' is often plural in Norwegian, just as glasses. It is possible to use "brille"(singular) in a few cases
'sko' is 'sko' in indefinite plural(irregular), so it will appear to be singular, while it isn't.